Drill block



FIG. 1 is a top perspective view of the drill block:

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is an opposing side view thereof; and,

FIG. 7 is an enlarged bottom view thereof.

In the figures, dashed lines are used to illustrate features of the drill block which form no part of the claimed design. In the figures, dashed-dot lines are used to illustrate a boundary and end of the claimed design. 

CLAIM The ornamental design for a drill block, as shown and described. 